/Engine/Source/Runtime/Engine/Classes/GameFramework/Actor.h
Attaches the RootComponent of this Actor to the RootComponent of the supplied actor, optionally at a named socket.
Whether the attachment was successful or not
bool AttachToActor ( [AActor](API\Runtime\Engine\GameFramework\AActor) * ParentActor, const [FAttachmentTransformRules](API\Runtime\Engine\Engine\FAttachmentTransformRules) & AttachmentRules, [FName](API\Runtime\Core\UObject\FName) SocketName )